What are the main raw materials of polyurethane foam?

High resilience cold-cured polyurethane foam has excellent mechanical properties and a high compression load ratio, so it has significant sitting comfort, excellent fatigue resistance, latex-like feel, and good breathability. Its production It has high efficiency and low energy consumption and has been widely used in car seats.

Hyundai Motor Company’s plant in Ulsan will exclusively use BASF’s Elastoflex polyurethane soft foam composite to produce car seats. This highly elastic polyurethane foam has low VOC content and is mainly used in the production of car seats and headrests.
Compared with traditional foam, Elastoflex can improve the comfort, elasticity and load-bearing performance of seats and headrests.
In order to meet stringent emission control regulations, BASF has also optimized the production process of polyether polyols. Polyether polyols are used in the production of Elastoflex polyurethane foam, which is used in the production of high-comfort seats. Optimized production processes enable BASF to produce specialty polyether polyols with low cost, high performance and low VOC emissions.
In tests conducted by SGS Corea, the world’s leading testing agency, Elastoflex reduced acetaldehyde and formaldehyde emissions by more than 30%, helping to improve the air quality in the car and the health of car drivers. Field tests also show that the newly developed polyurethane combination has excellent fluidity and reduces product defect rates, thereby improving the productivity of the production line.
In the production of automobiles, car seats occupy a large area, which directly determines the amount of materials used. Cars have gradually affected people’s lifestyles, making people’s travel more and more convenient. Traditional car seats are mostly leather products, and most of them are made of sponge and other materials, which lack a certain degree of comfort. Nowadays, soft polyurethane foam It is used as one of the production materials for car seats. It is of high quality and low price, and has gradually been used by manufacturers in a large number of automobile productions.

Polyurethane foam is a relatively soft new material with a certain degree of elasticity. It has many pores, high density, good resilience, sound absorption, breathability, good thermal insulation and other properties. It is used in all aspects of life. Many manufacturers choose to use highly elastic polyurethane foam as the material for car seats, and the performance of this material has gradually been accepted by people.
The static comfort of a car seat refers to whether the matching relationship between the car seat and the human body can provide users with comfortable sitting conditions. The static comfort of the seat is related to the dimensional parameters, surface treatment and adjustment characteristics of the seat.
Car seats are mostly made of foam materials with high elasticity and low density, which can prevent the burning of substances. Nowadays, our government has stricter requirements for automobile materials, requiring that their maximum combustion value is ≤70mm/min. Such regulations greatly increase the safety of the automobile itself, and soft polyurethane foam with this burning rate standard Making saddles is also gradually appearing in the field of vision of manufacturers.
The wear resistance of soft polyurethane foam is used as a raw material for car seats. The fragility of many plastic products prevents them from being used for a long time, but soft polyurethane foam has good wear resistance. Its own strong stretchability and tear resistance make it have superior performance. Compared with traditional car seats, it has lower cost, longer use time and strong plasticity. It can be suitable for automobiles and gradually attracts the attention of automobile production. favored by manufacturers.
With the development of the automobile industry, people have higher and higher quality requirements. In particular, safety, comfort and environmental protection have become the development trends of contemporary automobiles. QC/T 850-2011 “Polyurethane Foam for Passenger Car Seats” was released and implemented in 2011. It is my country’s first industry standard that sets out emission requirements for polyurethane foam for car seats. In the same year, the recommended national standard GB was also promulgated and implemented. /T 7630—2011 “Guidelines for Evaluation of Air Quality in Passenger Cars”. This has prompted domestic assembly plants to monitor volatile organic compounds (VOCs) and>
Mix the highly active polyether and other additives evenly at room temperature in advance, then pour in the IPDI and mix evenly for 6-15 seconds, then pour it into a preheated foaming box. It is best to use an oven not lower than 30°C to keep it warm and foam for 20-20 seconds. After 30 minutes, push the bubbles out and let them mature at room temperature for 24 hours before cutting. The cells are uniform and fine, have high strength, good elasticity, will not pulverize, and generally will not shrink. You only need to press lightly when shrinking slightly. Special caution is required not to use grafted polyether polyols.
Production process of microporous soft foam materials
1. Application of microporous soft foam
It should be noted here that microcellular foam does not refer to microcellular PU elastomer (such as soles, insoles, high-speed rail gaskets, tires, car springs and other foams), but a soft high-density polyurethane foam sheet. It is a special polyurethane soft foam. This kind of polyurethane flexible foam sheet has been widely used in communications, computers, home appliances, digital products, other electronic products, shoes, medical equipment, hardware, etc. as sealing, shock absorption, and cushioning materials.
2. Outstanding performance
High sealing, high energy absorption (high buffering), high dimensional stability. Excellent resistance to compression deformation, water resistance, high temperature resistance, aging resistance, environmental protection and pollution-free, etc.
3. Basic molding process
This foaming process is different from ordinary chemical foaming with water or ordinary physical foaming agent (such as methylene chloride, etc.) foaming process. Instead, it uses a permanent gas injection foaming method. The basic production process uses multi-component low-pressure foaming. It is mechanically poured on the release paper of the conveyor belt and continuously scraped into a uniform thickness, and then cured and molded by constant temperature gel in the drying tunnel. The product is rolled into a roll and then post-cured; the unique foaming process determines the outstanding performance of the material.
Technical focus:
Organometallic salt catalysts appropriately control the reaction rate.
Strict temperature control is also an important factor in controlling product quality.
As one of the six major synthetic materials in the world that attracts attention, the scale of the polyurethane industry has expanded rapidly in recent years. According to the “2016-2022 China Polyurethane Industry Market Trend Forecast and Trend Forecast Research Report” released by Bosi Data: Global polyurethane product output has exceeded 21 million tons, of which foam system and non-foam system products each account for half, and its huge growth potential is ready Attention.
The trend of production scale is obvious. In terms of production, the polyurethane industry, like most chemical industries, has increasingly obvious trends of intensification and scale. As polyurethane production technology becomes more and more mature, products become more popular and application fields continue to expand, manufacturers have discovered that in order to maintain a certain level of profitability, they must have certain economies of scale. As a result, new enterprises became larger and larger, and their production capacity increased rapidly.
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